Hi

I have tried to figure out how the thermostat on my aircooled 1982 2.0 Vanagon works.

I can see the thermostat housing, the cable, the pulley, and the flaps regulating the cooling air.

I do understand that when the thermostat gets hot, it should expand.

But from looking at wiring and my engine when it is hot, I cannot see that the wired gets pulled and that the "flaps" does open.

Can someone explain the full theory for me on the thermostat, the cable and the "flaps"?

I know that I need to pull the thermostat, and test it - but still - I would really like to get the idea of how this setup should function.

Happy driving

Jens Jakob